<p class="MsoNormal"><span lang="EN-US">Hello,</span><span lang="EN-US"></span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">I have a several questions about SPECFEM3D:</span></p>
<p class="MsoNormal"><span lang="EN-US">I try to use specfem in local problems, more precisely, I compute models in scale of seismic.</span></p>
<p class="MsoNormal"><span lang="EN-US">So, I have next questions:</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">1) How I can choose source time function, I want to
use “ricker”, for example?</span></p>
<p class="MsoNormal"><span lang="EN-US">2) What about coordinates of receivers and source, if
I use CUBIT for meshing with next parameters:</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">cubit.cmd('brick x 2000 y 2000 z 2215')</span></p>
<p class="MsoNormal"><span lang="EN-US">cubit.cmd('volume 1 move x 10000 y 10000 z -1107,5')</span></p>
<p class="MsoNormal"><span lang="EN-US">cubit.cmd('brick x 2000 y 2000 z 4600')</span></p>
<p class="MsoNormal"><span lang="EN-US">cubit.cmd('volume 2 move x 1000 y 1000 z -2445')</span></p>
<p class="MsoNormal"><span lang="EN-US">cubit.cmd('brick x 2000 y 2000 z 5000')</span></p>
<p class="MsoNormal"><span lang="EN-US">cubit.cmd('volume 3 move x 1000 y 1000 z -2925')</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">SPECFEM3D use UTM zones, but in my case it doesn’t
matter in which it should to be located.</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">I made next
CMTSOLUTION file </span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoPlainText"><span lang="EN-US" style="font-family:"Courier New"">PDE 0000 01 01 00 00 00.00 1000 1000 0.200
0.0 0.0 hom_explosion<br>
event name: hom_explosion<br>
time shift: 0.00<br>
half duration: 0.5<br>
latitude: 1000.0<br>
longitude: 1000.0<br>
depth: 0.2<br>
Mrr: 1.000000e+23<br>
Mtt: 1.000000e+23<br>
Mpp: 1.000000e+23<br>
Mrt: 0.000000<br>
Mrp: 0.000000<br>
Mtp: 0.000000</span><span lang="EN-US"></span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">In result
of computation was of the fact that coordinates of source change to
(300;300;200) </span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">So I made
next STATIONS file</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoPlainText"><span lang="EN-US" style="font-family:"Courier New"">R1 KG 500.00000 1000.00000 0.0 200.0<br>
R2 KG 550.00000 1000.00000 0.0 200.0<br>
R3 KG 600.00000 1000.00000 0.0 200.0<br>
R4 KG 650.00000 1000.00000 0.0 200.0<br>
R5 KG 700.00000 1000.00000 0.0 200.0<br>
R6 KG 750.00000 1000.00000 0.0 200.0<br>
R7 KG 800.00000 1000.00000 0.0 200.0<br>
R8 KG 850.00000 1000.00000 0.0 200.0<br>
R9 KG 900.00000 1000.00000 0.0 200.0<br>
R10 KG 950.00000 1000.00000 0.0 200.0<br>
R11 KG 1000.00000 1000.00000 0.0 200.0<br>
R12 KG 1050.00000 1000.00000 0.0 200.0<br>
R13 KG 1100.00000 1000.00000 0.0 200.0<br>
R14 KG 1150.00000 1000.00000 0.0 200.0<br>
R15 KG 1200.00000 1000.00000 0.0 200.0<br>
R16 KG 1250.00000 1000.00000 0.0 200.0<br>
R17 KG 1300.00000 1000.00000 0.0 200.0<br>
R18 KG 1350.00000 1000.00000 0.0 200.0<br>
R19 KG 1400.00000 1000.00000 0.0 200.0<br>
R20 KG 1450.00000 1000.00000 0.0 200.0<br>
R21 KG 1500.00000 1000.00000 0.0 200.0</span><span lang="EN-US"></span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">But after
computation I had next error, that no receivers didn’t get into the model</span></p>
<p class="MsoNormal"><span lang="EN-US"> </span></p>
<p class="MsoNormal"><span lang="EN-US">Best
regards,</span></p>
<p class="MsoNormal"><span lang="EN-US">Aleksey</span></p>